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Nebula 2
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errmsg.c
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C/C++ Source or Header
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1995-06-12
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71 lines
/*
* Copyright (c) 1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND CARNEGIE MELLON UNIVERSITY
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT
* SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Users of this software agree to return to Carnegie Mellon any
* improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* Export of this software is permitted only after complying with the
* regulations of the U.S. Deptartment of Commerce relating to the
* Export of Technical Data.
*/
/*****************************************************************
* HISTORY
* $Log: errmsg.c,v $
* Revision 1.2 90/12/11 17:52:09 mja
* Add copyright/disclaimer for distribution.
*
* 04-Mar-85 Rudy Nedved (ern) at Carnegie-Mellon University
* Create a CMU version of the BBN errmsg routine from scratch. It
* differs from the BBN errmsg routine in the fact that it uses a
* negative value to indicate using the current errno value...the
* BBN uses a negative OR zero value.
*/
extern int errno;
extern int sys_nerr;
extern char *sys_errlist[];
static char *itoa(p,n)
char *p;
unsigned n;
{
if (n >= 10)
p =itoa(p,n/10);
*p++ = (n%10)+'0';
return(p);
}
char *errmsg(cod)
int cod;
{
static char unkmsg[] = "Unknown error ";
static char unk[sizeof(unkmsg)+11]; /* trust us */
if (cod < 0) cod = errno;
if((cod >= 0) && (cod < sys_nerr))
return(sys_errlist[cod]);
strcpy(unk,unkmsg);
*itoa(&unk[sizeof(unkmsg)-1],cod) = '\0';
return(unk);
}